warren buffett, self-developer and one of the world's richest men, says yes. >> we have building supply companies and we're seeing prices moving up somewhat, we're seeing demand improve, we're seeing the overhang of houses diminish, so we're coming back. >>n the other hand, the former federal reserve chairman alan greenspan told me, don't get excited yet. >> what's happening is real, it's slow, but we can exaggerate how big it is but it's certainly going in the right direction. >> joining me now is chris mayer, he's the professor and mayor of business school. jonathan, let me start with you. median home prices have risen for eight months in a row. the shiller index is up five months in a row. you say don't look at these prices so much. >> i think home prices is the worst thing to look at. the reason we're seeing prices uptick is we're seeing foreclosure activity at a lighter level than it would have been. banks discovered during the process while they held back on foreclosures, short sales were the way to go a couple years ago. we have a lot less distressed property in the mix right now